Split supporting loop for fixtures



' Aug. 23,- 1932. J, GLOWACK-l I 1,873,385

SPLIT SUPPORTING LOOP FOR FIXTURES Filed Feb. 3. 1950 VE UH I M g5 izyPatented Aug. 23, 1932 Salee -6mm {L002 FOR FIXTUR SApplicationfilerilehrflairf3; 1930 seiiaino. 425,412.

light chain-supported fixtures, V a closed sup-f porting loop has beenmblinltd on} the lower endflof the fixture jsupporting'eteni; fith'erebymaking'itfnecegisziry'toopen ftfhe 'up-j perin'ost link of thefixture-sluppbrtin'gfeh'ain in order to permit the-samdtl be 'engajgedthrough the closed flsupporting 'loop, after thefixture.

In order to obviate I ing' fixture-Supporting chitin links; to" pevijded 'on the upper portion ofgjthebody of ,,Init-the same to beengagedfthroughelo'sedj "*If12iti1re loops, this'invention hasbeen degvised to provide an irnpffo ved, iniplified' f1 split supporting loop;adapted, to be used on i a fixture stem onon' a fixture; andjidapted jto reeeive a closed chaindinki through the; ""split' portion of thefloopprior-5130 the mounting of said loop 11 a fixturfstei'n joi on [afixture body by meaHSpf'a eoa cti'ngflock'i f ringer collar,whi'ch,'when lnounted p o'i-u .,tiono1i the splitheedlofthe loop; Servesns a, retaining means to" prevent "the! split;

endof the loop frond openingj'ilp andfb ecom ing disengaged from thethreaded end of the stein or other member of the fixture on which I A Ip jn Q fi b i ilth nlit rf i .tiq a etyp lbo'pit a malifty e' pi thesplit loop is engagedl I r It is "an object ;of this inventiontb pro-fvide an improved typefofesplit supporting loop with alock'ring adaptedto facilitate J V p I k I v a d; having" associated? w b i ffihf 51 1 1h ifid mounting of a fixture-supporting chitin;

It is also an object'otthis invention tm "provide a fixture stein or afixturewithfehj there male or ajfemale 'split loopfwithfaf lock ringremovably engaged thereonto p'er Init ajlink of1a fixturesupportingchainto p v f'grally" formed or .se'cilred on the lower end195 engaged in the splitloop ithout necessit'a'ting opening of thec'hainjlink.

It is an important object ofthis invention to provide an improved typeof split fixture-Q supporting loop adapted to 'have a fixture a fixtureyV i slidably engaged on thefixturestem; 3 109-6 10 I euppQrting chainlink "slidziblyj engaged ""through -the split end thereof prior to' the7 View" of :ii fixture stein 7' and canopy aSSbQlEi-i fted' lthac'eilinguoutletfbox and illlistzyt the neeessity oi open ting-emit of a;tak ng r ngbil tiii-fs litj; j r end of the loop; and tbe'forelthe Splitloop-is a fixture stem onsiinilafdevice.

lmounted inupo'sitionl'on thethreaded end of Other LandQfurtherimportant. ohjeets of bs this invention Will be npparent'ifromth L specfication iand the accompanying; draw V f Xture-supporting f chitinassoeieted with mproved split supporting: loopsflcon; A

,nee'ted Withthe. fixtureistem and with thej fixture ndembbdyi g theprinciples ofith is invention iigur z a-nffenlarged elYfitionelfyieofethei irnpr oved.plitflsuppdrting loop i ly roken; aw y andshexjvnseetionghaviing, engaged-thereon ,a lock ring illustr tin themethod. qi en aging 'the fixture ph'ainfiirns the splitlloopinfdottedlined, K v I Eigur'e" 3 is gdi metrical; sectional vievir of 3the"spliteuppoitingloop loeki 1 'l uf e t i prov d illi s't ritedfiinthe dliflwin g and hereinafter qo suppprti-ngi loop" lock'ring; in faninverted? so heed dTthereoff-a;threaded nippl rsupper ti f" ing orw-allfhaVing supported thereiii' an out? of "the "fixture "stenil' is aneXternh lEi'thread- 111g a threaded mam" eupportingj member f 'r k i'it-i:

- low the ceiling 1 is a fixture canopy 5 which engagement with the stem3.

is adapted to be held in position against the ceiling 1 by means of acanopy retaining slip ring 6 which has frictional clamping 3 is an elec-Positioned beneath the a stem trio light fixture or socket 7 which isadaptfixture stemand on the fixture member 7.

The split supporting loopounitcomprises.

ed to be loonnected by. means of a chainand upper lower split supportingloop units embodying the principles of this invention" and adapted to beremovably engaged; jon the a loop or link 9 having integrally formedradially thereon ahead 10 which is hollowand internally threaded at 11.The internally threaded head 10 and the portion'of the loop9 where theheadis'joined on said loop is split at '12 to p'ermit a'closed link oftaining ring or look ring13 is slidably ent gaged-over, the split head10, as illustrated I in Figure 2, with'the upper flange ringportion '14thereof seated upon the outer end of the split head 10. The locking ring13"serves' to hold the split'portions of the head 10' agains'tspringingoutwardly away from one another, "With the lock ring engagedon the splithead of the loop and with the chain 8 I engaged on the split loop asdescribed, the split"hea d is adapted to be threaded onto "the'threadedsup'porting shank 4 provided on fthe'lower end of-fthe fixturestem 3, as illustrated in'Figure' 1'. Withthe' splithead 10 engaged onthe shank kl,- itis 'impossiblejto compress theheadfso that the same isactually locked within the locking ring 13 against accidentaljremoval orpullingl off of the threaded shank 4 0f the fixture stem.

- In a manner similar to that 'hereinbe foreQ described; the lowermostlink ofthe fixturechain 8 is adapted to be engaged through'the splitheadlOof a lower split loop 9, after which'a' locking ring 13isadapted to been- 'gaged over thefsplit head 10, as illustrated in Figure 4:. If thefixtureor socket 7 is 'of the female type having an internally threadedrecess in the upper mounting end thereof; the improved split supportingloop may be converted from the female type illus trated in Figure 2intoothe'male' type; illustrated in Figure 4; This is accomplished bymerely threading an externally threaded ;bushing or nipple 15 into theinternally threaded split head 10, leaving a portion of the threadedbushing or nipple 15 projecting beyond-the flange 1 of the lock ring-13so that the threaded projecting end of'the nipple :may; be threaded intoa the internally threaded recess provided in the socket or fixture 7which is to be supported on the lower end of the chain 8.

The locking rings 13 engaged on the upper and lower split loop units areof the rounded bead type to correspond to the rounded bead I forming apart of the canopy slip ring retaining member 61"Whil a round'ed beadtypelockri'n'g 13 is'illustrated and described,

it will, of course, be understood that the design ofthe; lockrings maybe developed to correspond with the fixture parts withwhich the splitsupporting loop units are to be used.

{Figure 5 illustrates asplit supporting loop having a modifiedform-oflocking ring unit engagedthereon. The modified locking ring comprises astr'aight'ringfor band 16 provided with an'inwardlydirected fiangel? atthe outerfend thereof adapted to seat against the end of thesplit headto hold the lock ring in aset position of of the "split loop."

its'mounting,the ,jlower 'splitsupporting loop 9 has the lowermost-link'o fthefchain 8 ens5 adjustment "on the head In the assembly'and useiof'a fixture and i "'gaged throughithe split head thereof, after "whichthe'lower locking ring 13 is engaged over the head and thenipplel5is'threaded into position in the head 1,0, as illustrat'ed'in Figure 43;Thejnipple may now'be engaged with the fixture 7, with the wires fromthe fixture passing upwardly through the nipple" and laced throughthelinks of thefchain, passe ingupwardly' through'the'upper split sup-"T porting loop after theup'permostlink of the 2100 chain has beenengaged through the slot 12} 0f the-loopl The locking ring 13 0f theupper loop is now engaged onlthe' head of the through the stem Y 3, withthe upper ends "and theiwires from theTfiXture areinserted 105 5 of thewires projecting out of thehickey f forming apart of.;the' stem. Beforethe? upper split loop is engaged'on the lower end of vthe stem 3,-thecanopy "5 and the slip ring} 6 are engaged on the stem, afterwhich theheadof the'upperspl'it loop withthe lock ring engaged thereonis threadedonto the threaded shank 4 engaged on the lower end" .of the stem 3. Withthe fixture supported on the lower end of the stem 3 by means of thechain 8 and the improved s'plit supportj mg loops and lock'rings'thecanopy and slip ring 6 are movedinto'positionionthe lower I end'of thestem, permitting the upper end of the-stem 31 to be engaged in'theceiling outlet box 2, allowing sufiicient room above the canopy'topermit the wires from the fixture'to be connected withthe lead wires inw the. outlet box. After the wires havevbeen I connected in the outletboxdthe canopy and slip ring are pushed upw'ardlyonthe stem 3 into theposition illustrated in Figurel, withithe upperendof the canopy seatedagainst the ceiling and with the'canopy held J in position means {of thefrictional gripping contact of the slip ring 6 with the stem 3.

The improved split type of supporting loop, together with the lockingring, is adapted to be engaged either on a fixture stem or on a fixtureafter a chain'link has been engaged through the split opening of theloop. While a chain is illustrated and described as being the connectingmember between the fixture split supporting loop and the fixture stemsplit supporting loop, it will, of course,

be understood that any other type of a connecting member may be usedbetween the two split loops, such as a fixture supporting bar havingring members engaged on' the ends thereof. Attention is also directed tothe fact that where necessary the chain or connecting member may beomitted and the lower split supporting loop may be engaged through theupper split loop, thereby connecting the fixture and the fixture stem bymeans of the two interfitting split loops.

It will, of course, be understood that various details of constructionmay be varied through a wide range without departing from the principlesof this invention, and it is, therefore, not purposed to limit thepatent granted hereon otherwise than necessitated by the scope of theappended claims.

I claim as my invention:

1. A fixture supporting device comprising a split loop, an internallythreaded split head integrally formed on said loop, a look ringremovably engaged around said split head before mounting of said loop,and a flange formed on said lock ring and seated on the outer end of thesplit head to hold the ring in position, and a supporting memberthreaded into the split head and clamping said flange thereon.

2. The combination with a fixture supporting stem, of a split loopadapted to have a fixture supporting member engaged therein beforeattachment of the split loop directly on said stem, and a locking memberengaged on said split loop before mounting of the split loop to hold thesame locked against accidental removal from said stem, said lockingmember clamped in place between the stem and said split loop.

3. A fixture support comprising an open loop, recessed internallythreaded head sections integrally formed on the ends of said open loopwith said head sections spaced Illinois.

JOHN B. GLOWAGKI.

apart and having a receiving slot therebetween of suflicient width toreceive a closed fixture supporting member therethrough withoutrequiring further separation of said head sections, and a locking meanssupported on the head sections and enclosing the same to hold the headsections from separating when they are engaged on a fixture stem.

4. A fixture support comprising an open loop, a split head on the openportion of said loop having a slot therein of suflicient width toremovably receive a closed fixture supportloo

